Correct Answer:
C. 9:7
Correct answer: 9:7. Girls : Boys = 18 : 14, and dividing both by 2 gives 9 : 7.
Background: Order matters in a ratio: the first-named quantity comes first.
- 7:9: 7:9 reverses the order of the ratio.
- 14:9: 14:9 is not 18:14 in simplest form.
- 7:12: 7:12 is not the ratio of girls to boys.
Did you know? Always divide both terms by their HCF.
Memory trick: Girls first, boys second.